Supplemental rim for pulleys or belt-wheels.



F. P. KOBERT. SUPPLEMENTAL RIM FOR PULLEYS 0R BELT WHEELS. APPLIOATIONFILED JUNE I 1912.

1O62,831 Patented May 27, 1913.

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SUPPLEMENTAL RIM FOR PULIQEYS (in lBELT-wfiEELs.

I Specification of=Iletters Patent.

Application filed June 1, 1912. Seria1 li'o$700;-9f3.

To all whom it may concern} 1 Be it known that LTMNK P. Koenn'r, acitizen of the United States, residing at Fairhaven, in the county ofNew Haven and State of Connecticut, have invented certain new and usefulImprovements in Supplemental Rims for Pulleys or Belt-Wheels,

of which the following is a specification,

1 such as will enable those skilled in'the art to which it appertains tomake and use the same. a

This invention relates to power pulleys or belt wheels, and the objectthereof is to provide a supplemental rim for pulleys or wheels of thisclass, by means of which the diameter of'such pulleys or wheels may beincreased whenever desired, a further object being to provide asupplemental rim for pulleys or wheels of different transversedimensions, so as thereof, and whereby the diameter of pulleys or wheelsof this class may be increased whenever desired in order to take up theslack in a belt, or for any other purpose.

The invention is fully disclosed in the following specification of whichthe accompanying drawing forms a part; in which the separate parts of myinvention are designated by suitable reference characters in each of theviews, and in which Figure 1 is a side view of what is known as amade-up-steel pulley provided with my improvement, and Fig. 2 atransverse section on theline 2-2 of Fig. 1. In the drawin forming partof this specification I have s own an ordinary made-upsteel pulleycomprising a hub 1, spokes '2 and a rim 3, said run parts the adjacentedges of whichare prbvided with inwardly directed flanges 4 to which theseparat parts 5 of the spokes 2 are secured.

In the practice a supplemental: same manner as composed of two parts ofwhich are provided rected flanges 8 which are together,

of my invention I provide 6 which is made in the the rim 3, said rim 6being 7 the adjacent edges with inwardly dibolted or riveted g parallelradial members 10 which exten hub of the wheel, when the supplementalrim 6 is in use, and the parts 11 which are bolted to the centralflanges 8 of said rim 6. The parallel radial members 10 of the L-shapedarms 9 are provided in the inner 4 faces thereofas at'12 to increase thediameterbeing composed of two and to which are secured L-shaped 50radial arms 9 havin inwardly toward the p 13 'and'14 with transversegrooves, and 'in' the form of constructron-shown the rim 3 of the pulleyor wheel sh own fits in the central -gro0ves 13, an'd the rim '6 issecured to the rim 3 by means of 'bolts'15 passed transversely throughthe parallel parts 10 of the L-shaped arms 9 outside of said rim 3, TheL-shaped arms 9 of the supplemental rim 6 form spring clamps or jawswhich are securely bound to the rim 3 by the bolts 15, andby means ofthis construction the supplemental rim 6 may be tightly secured to therim 3 of the pulley or wheel shown, and a power belt may be mounted onsaid supplemental rim 6, as will be readily understood. If additionalbolts for securing the supplemental rim-6 to the rim 3 are desired they,may be passe through the parallel members 10 of the L-; shaped arms 3,and other bolts may be passed through the parallel members 10 of theL-shaped members 9 at 17 if desired,.but it is believed that. inpractice the bolts 15 will be sufiicient,

By means of my construction the supplemental rim 6, constructed as shownand described, may be applied to pulleys or belt wheels of threedifferent diameters, and'as PatentedMay-27, -191 3.

9 at 16, inwardlyof'the rim such pulleys orbelt wheels are usually madeof standard sizes the supplemental rim or its attachment maybe made tocorrespond with these different grades or sizes, and the diameter of apulley or belt wheel of any desired. My invention ticular constructionof the pulley or belt wheel, nor to any particular construction of thesupplemental rim member and its attachments, nection, being to provide asupplemental-rim for pulleys or wheels of the class specified which maybe attached to the rim of said pulleys or wheels forthe purpose of'increasing the diameter thereof, when necessary.

Having I I claim as new and desire to secure by Letters Patent is 3 1.'A supplemental rim for pulleys or belt wheels, said supplemental rimbeing provided with parallel, inwardly-directed clamp members havingspaced grooves, in their inner faces, adapted to receive of the rim ofthe pulley or belt wheel, and

is not limited to any parthe side edges.

. dimensions may thus be increased whenever all that is necessary inthis con- 4 fully described my invention what bolts passed through .saidclamp members t0v secure the supplemental rim to the rim of the pulleyor belt wheel.

2. The combination with a pulley or belt wheel having the usual rim, ofa sup lementz l rim provided with parallel inwar lydirected side clampmembers having spaced grooves in their inner faces adapted to receivethe side edges of the rim of the plll-' ley or belt wheel and boltspassed through said clamp members to secure the supplemental rim to therim of the pulley or belt wheel.

In testimony that I claim the foregoing as my invention I have signed myname in 15 presence of the subscribing witnesses this 28th day of May1912.

FRANK P. KOBERT.

Witnesses S. Anmmws, C. MULREANY.

